42242351 has 2 divisors, whose sum is σ = 42242352. Its totient is φ = 42242350.

The previous prime is 42242311. The next prime is 42242363. The reversal of 42242351 is 15324224.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42242351 - 2⁶ = 42242287 is a prime.

It is a Chen prime.

It is equal to p_2561450 and since 42242351 and 2561450 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42242311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21121175 + 21121176.

It is an arithmetic number, because the mean of its divisors is an integer number (21121176).

Almost surely, 2^42242351 is an apocalyptic number.

42242351 is a deficient number, since it is larger than the sum of its proper divisors (1).

42242351 is an equidigital number, since it uses as much as digits as its factorization.

42242351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1920, while the sum is 23.

The square root of 42242351 is about 6499.4115887517. The cubic root of 42242351 is about 348.2699687606.

Adding to 42242351 its reverse (15324224), we get a palindrome (57566575).

The spelling of 42242351 in words is "forty-two million, two hundred forty-two thousand, three hundred fifty-one".